Why did this nginx config stop working after upgrading Ubuntu from 18.04 to 20.04?

Question

Nginx

Good afternoon!

I tried to upgrade the server to Ubuntu 20.04 and was forced to roll back to backup, because. one of the sites stopped working normally, and I couldn’t figure out why on my own.

There is this config:

server {
    listen 443 ssl http2;
    server_name domain.tld;
    root /var/www/domain.tld;
    index index.php index.html;
    autoindex off;

    location / {
        try_files $uri $uri/ /$uri.php$is_args$args;
    }

    location ~ \.php$ {
        fastcgi_pass unix:/run/php/php7.4-fpm.sock;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param SCRIPT_NAME $fastcgi_script_name;
        fastcgi_intercept_errors on;
        fastcgi_index index.php;
        try_files $uri =404;
    }

    location ~ /\.ht {
        deny all;
    }

    location ~* \.(css|js|gif|ico|jpeg|jpg|png|svg|svgz|woff|woff2|ttf|otf|eot|json)$ {
        expires max;
    }

    location /l/ {
        rewrite ^/l/([a-zA-Z0-9/]+)$ /l.php?i=$1 last;
    }

    location /t/ {
        rewrite ^/t/([a-zA-Z0-9/]+)$ /t.php?i=$1 last;
    }

    location /w/ {
        rewrite ^/w/([a-zA-Z0-9/]+)$ /w.php?i=$1 last;
    }

    location /confirm/ {
        rewrite ^/confirm/(.*)$ /confirm.php?i=$1 last;
    }

    location /unsubscribe/ {
        rewrite ^/unsubscribe/(.*)$ /unsubscribe.php?i=$1 last;
    }

    location /subscribe/ {
        rewrite ^/subscribe/(.*)$ /subscribe.php?i=$1 last;
    }

    ssl_certificate /etc/letsencrypt/live/domain.tld/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/domain.tld/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
}

The problem is that after the update, nginx goes into a timeout.

If you do it like this:

location / {
        try_files $uri /$uri.php$is_args$args;
    }

It starts to open pages, but in this case, my site stops working as expected. :)

Initially, the engine assumes that it will run on Apache. Maybe I did something wrong when translating the rules for nginx? Here is the original .htaccess:

Options +FollowSymLinks
Options -Multiviews

RewriteEngine On
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^([a-zA-Z0-9-]+)$ $1.php [L]

# Link tracker
RewriteRule ^l/([a-zA-Z0-9/]+)$ l.php?i=$1 [L]

# Open tracker
RewriteRule ^t/([a-zA-Z0-9/]+)$ t.php?i=$1 [L]

# Web version
RewriteRule ^w/([a-zA-Z0-9/]+)$ w.php?i=$1 [L]

# unsubscribe
RewriteRule ^unsubscribe/(.*)$ unsubscribe.php?i=$1 [L]

# subscribe
RewriteRule ^subscribe/(.*)$ subscribe.php?i=$1 [L]

PS: Also, I would be grateful for any comments on how to make the config better or what to read about how to do it right.

Answer 1

We need to check the logs.
Perhaps PHP configs in other places, etc.